refactor: 模块解耦

config.py

@@ -0,0 +1,16 @@
+import os
+from pathlib import Path
+
+BASE_DIR = Path(__file__).resolve().parent
+USER_DB_PATH = BASE_DIR / "users.db"
+
+MODEL_CALL_TIMEOUT_SECONDS = 45
+ASR_LANGUAGE = "zh-CN"
+
+MODEL_NAME = os.getenv("VLM_MODEL", "Qwen/Qwen3-VL-8B-Instruct")
+MODEL_BASE_URL = os.getenv("VLM_BASE_URL", "http://220.248.114.28:8000/v1")
+MODEL_API_KEY = os.getenv("VLM_API_KEY", "EMPTY")
+
+# edge-tts Yunxi 音色
+TTS_VOICE = os.getenv("TTS_VOICE", "zh-CN-YunxiNeural")
+